com.hotels.styx.client.stickysession.StickySessionConfig Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013-2017 Expedia Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hotels.styx.client.stickysession;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Objects;

import java.util.Optional;
import java.util.concurrent.TimeUnit;

import static com.google.common.base.Objects.toStringHelper;
import static java.util.concurrent.TimeUnit.HOURS;

/**
 * A Configuration used by a load balancer for session stickiness.
 */
public class StickySessionConfig {
    private static final int TWELVE_HOURS = (int) HOURS.toSeconds(12);

    private final boolean enabled;
    private final int timeoutSeconds;

    private StickySessionConfig() {
        this(false, TWELVE_HOURS);
    }

    @JsonCreator
    StickySessionConfig(@JsonProperty("enabled") boolean enabled,
                        @JsonProperty("timeoutSeconds") Integer timeoutSeconds) {
        this.enabled = enabled;
        this.timeoutSeconds = Optional.ofNullable(timeoutSeconds).orElse(TWELVE_HOURS);
    }

    public static StickySessionConfig stickySessionDisabled() {
        return new StickySessionConfig();
    }

    public static Builder newStickySessionConfigBuilder() {
        return new Builder();
    }

    private StickySessionConfig(Builder builder) {
        this(builder.enabled, builder.timeoutSeconds);
    }

    @JsonProperty("enabled")
    public boolean stickySessionEnabled() {
        return enabled;
    }

    @JsonProperty("timeoutSeconds")
    public int stickySessionTimeoutSeconds() {
        return timeoutSeconds;
    }

    @Override
    public String toString() {
        return toStringHelper(this)
                .add("enabled", enabled)
                .add("timeoutSeconds", timeoutSeconds)
                .toString();
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(this.enabled, this.timeoutSeconds);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }

        StickySessionConfig that = (StickySessionConfig) obj;

        return this.enabled == that.enabled
                && this.timeoutSeconds == that.timeoutSeconds;
    }

    /**
     * A builder for the {StickySessionConfig}.
     */
    public static final class Builder {
        private boolean enabled;
        private int timeoutSeconds = TWELVE_HOURS;

        public Builder enabled(boolean enabled) {
            this.enabled = enabled;
            return this;
        }

        public Builder timeout(int timeout, TimeUnit timeUnit) {
            this.timeoutSeconds = (int) timeUnit.toSeconds(timeout);
            return this;
        }

        public StickySessionConfig build() {
            return new StickySessionConfig(this);
        }
    }
}